dridex | 4e316e27c53cdbe1c45f5dc77bdd077ec55a9c0b399dc0680f8d73e5f579b745

General

Target

4e316e27c53cdbe1c45f5dc77bdd077ec55a9c0b399dc0680f8d73e5f579b745.dll
Size

668KB
MD5

1b93b4a0fc966e6a9bc34b5930c0177d
SHA1

b646f6d379fcbec61abc34461c7a5b886d317e1f
SHA256

4e316e27c53cdbe1c45f5dc77bdd077ec55a9c0b399dc0680f8d73e5f579b745
SHA512

92a77bb261507efeb6c37254d0f94ce902e10587c0b13c336640ffc445ea2e31c9f80dbe32cfcd7ff6eb04fc844c0bc05c9725f7dc6cd70d1e3b7e53b62f9f2f
SSDEEP

6144:W34xznfAp4x+NWMqW/KZ1vCDTEpc2bysCZR6iwAtUnWKT5WK8Rpv1llfFfCRAuTF:WIKp/UWCZdCDh2IZDwAFRpR6Au

Score

10^/10

dridex botnet evasion payload persistence trojan

Malware Config

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Dridex family
dridex

Dridex Shellcode 1 IoCs

Detects Dridex Payload shellcode injected in Explorer process.

botnet payload

Processes:

resource	yara_rule
behavioral2/memory/3632-3-0x00000000027C0000-0x00000000027C1000-memory.dmp	dridex_stager_shellcode

Dridex payload 9 IoCs

Detects Dridex x64 core DLL in memory.

botnet payload

Processes:

resource	yara_rule
behavioral2/memory/1528-2-0x00007FFCAE490000-0x00007FFCAE537000-memory.dmp	dridex_payload
behavioral2/memory/3632-16-0x0000000140000000-0x00000001400A7000-memory.dmp	dridex_payload
behavioral2/memory/3632-35-0x0000000140000000-0x00000001400A7000-memory.dmp	dridex_payload
behavioral2/memory/3632-24-0x0000000140000000-0x00000001400A7000-memory.dmp	dridex_payload
behavioral2/memory/1528-38-0x00007FFCAE490000-0x00007FFCAE537000-memory.dmp	dridex_payload
behavioral2/memory/4660-45-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp	dridex_payload
behavioral2/memory/4660-50-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp	dridex_payload
behavioral2/memory/3860-66-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp	dridex_payload
behavioral2/memory/1536-81-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp	dridex_payload

Executes dropped EXE 3 IoCs

Processes:

cmstp.exeslui.exeWFS.exe

pid process

4660 cmstp.exe
3860 slui.exe
1536 WFS.exe
Loads dropped DLL 3 IoCs

Processes:

cmstp.exeslui.exeWFS.exe

pid process

4660 cmstp.exe
3860 slui.exe
1536 WFS.exe

pid	process
4660	cmstp.exe
3860	slui.exe
1536	WFS.exe

pid	process
4660	cmstp.exe
3860	slui.exe
1536	WFS.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Labelis = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\oYGBZCbPa\\slui.exe"

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

cmstp.exeslui.exeWFS.exerundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	cmstp.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	slui.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	WFS.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Modifies registry class 2 IoCs

Processes:

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
1528	rundll32.exe
1528	rundll32.exe
1528	rundll32.exe
1528	rundll32.exe
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632
3632

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	3632
Token: SeCreatePagefilePrivilege	3632
Token: SeShutdownPrivilege	3632
Token: SeCreatePagefilePrivilege	3632
Token: SeShutdownPrivilege	3632
Token: SeCreatePagefilePrivilege	3632
Token: SeShutdownPrivilege	3632
Token: SeCreatePagefilePrivilege	3632

Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3632

pid	process
3632

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

description	pid	target process
PID 3632 wrote to memory of 1372	3632	cmstp.exe
PID 3632 wrote to memory of 1372	3632	cmstp.exe
PID 3632 wrote to memory of 4660	3632	cmstp.exe
PID 3632 wrote to memory of 4660	3632	cmstp.exe
PID 3632 wrote to memory of 2812	3632	slui.exe
PID 3632 wrote to memory of 2812	3632	slui.exe
PID 3632 wrote to memory of 3860	3632	slui.exe
PID 3632 wrote to memory of 3860	3632	slui.exe
PID 3632 wrote to memory of 4792	3632	WFS.exe
PID 3632 wrote to memory of 4792	3632	WFS.exe
PID 3632 wrote to memory of 1536	3632	WFS.exe
PID 3632 wrote to memory of 1536	3632	WFS.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4e316e27c53cdbe1c45f5dc77bdd077ec55a9c0b399dc0680f8d73e5f579b745.dll,#1
1⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:1528

C:\Windows\system32\cmstp.exe
C:\Windows\system32\cmstp.exe
1⤵
PID:1372

C:\Users\Admin\AppData\Local\ezKn\cmstp.exe
C:\Users\Admin\AppData\Local\ezKn\cmstp.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4660

C:\Windows\system32\slui.exe
C:\Windows\system32\slui.exe
1⤵
PID:2812

C:\Users\Admin\AppData\Local\LmLM9v\slui.exe
C:\Users\Admin\AppData\Local\LmLM9v\slui.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3860

C:\Windows\system32\WFS.exe
C:\Windows\system32\WFS.exe
1⤵
PID:4792

C:\Users\Admin\AppData\Local\nRr\WFS.exe
C:\Users\Admin\AppData\Local\nRr\WFS.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\LmLM9v\SLC.dll

Filesize
672KB

MD5
ff246e4c9a0b940d65324f1327aae163

SHA1
bd6cbb344ab5d51392a7bb7f4098a2397002c25a

SHA256
a4196d23535472006dd24034e0b53efcc4355936e625fcd62203807807136bb8

SHA512
c0000182c29352551a3398885c6f0bcf23ddd6ca0c7753db6c13518c281d9a9dac4aae1573d3be8351f3d6c8397eb3eaf2d563b30a088565f7dcefdd4967962e

Download Submit
C:\Users\Admin\AppData\Local\LmLM9v\slui.exe

Filesize
534KB

MD5
eb725ea35a13dc18eac46aa81e7f2841

SHA1
c0b3304c970324952e18c4a51073e3bdec73440b

SHA256
25e7624d469a592934ab8c509d12c153c2799e604c2a4b8a83650a7268577dff

SHA512
39192a1fad29654b3769f007298eff049d0688a3cb51390833ec563f44f9931cd3f6f8693db37b649b061b5aab379b166c15dade56d0fc414375243320375b26

Download Submit
C:\Users\Admin\AppData\Local\ezKn\VERSION.dll

Filesize
672KB

MD5
c552cfbf73ee3c0d8dd09c34a4ef4e25

SHA1
11f5aaab68236c049325db59bf3c0a9baeb67471

SHA256
338871550886ac574bae9f6b1c58a74dafeb63454c480f607928dbd5f17d2a88

SHA512
26263e8111e6651f5d661abc1bda43b6b9975319a632c604b1f923a7f8fd188b3956674b0d78dc893c7e0239e5a180c8c8b7df50ea1f1e3d82ccd69fc0d57531

Download Submit
C:\Users\Admin\AppData\Local\ezKn\cmstp.exe

Filesize
96KB

MD5
4cc43fe4d397ff79fa69f397e016df52

SHA1
8fd6cf81ad40c9b123cd75611860a8b95c72869c

SHA256
f2d3905ee38b2b5c0b724d582f14eb1db7621ffb8f3826df686a20784341614c

SHA512
851ef9fa5a03ec8b9fea0094c6e4bfa0b9e71cee3412ee86b2dfc34682aa5fb6455fefe7fc0092b711956d7c880cf8a5761b63ee990aa8e72f3473086ac0f157

Download Submit
C:\Users\Admin\AppData\Local\nRr\WFS.exe

Filesize
944KB

MD5
3cbc8d0f65e3db6c76c119ed7c2ffd85

SHA1
e74f794d86196e3bbb852522479946cceeed7e01

SHA256
e23e4182efe7ed61aaf369696e1ce304c3818df33d1663872b6d3c75499d81f4

SHA512
26ae5845a804b9eb752078f1ffa80a476648a8a9508b4f7ba56c94acd4198f3ba59c77add4feb7e0420070222af56521ca5f6334f466d5db272c816930513f0a

Download Submit
C:\Users\Admin\AppData\Local\nRr\credui.dll

Filesize
672KB

MD5
b7f873027194fd3d7ecc43c19f504db4

SHA1
577f4108fef35035c7edee72d7bcd19e77cfcde2

SHA256
97ab833b86fa696b8a77caeae4e955f65f783584425f38a89ec210faeb44f281

SHA512
3708ff6deb7519a3d35710d639db70154762c579e9caf61a89c71f29e3e63febbfa5055875b8ac9f73a44b4b9f00416552d23c44fb4518c59b21847769168ebb

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Ltmfycbfnis.lnk

Filesize
1KB

MD5
f5bbf690c8d262263843ac1d7958affc

SHA1
46389b4771a3828521402bbbd2837a8b790db134

SHA256
0837b9012831d1e0791bbe668a072940cd7ed895b0dac647bfef607a2530fc20

SHA512
19628aae055b25b55c63e6c81cc0746b21d2152f151a92b1c5ab86e5e7cd8d06385b0db679d21bff0ca3015918f81358a804c26d626775005ae2de5d5236f8d4

Download Submit
memory/1528-0-0x0000023A26B70000-0x0000023A26B77000-memory.dmp

Filesize
28KB

Download
memory/1528-2-0x00007FFCAE490000-0x00007FFCAE537000-memory.dmp

Filesize
668KB

Download
memory/1528-38-0x00007FFCAE490000-0x00007FFCAE537000-memory.dmp

Filesize
668KB

Download
memory/1536-81-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp

Filesize
672KB

Download
memory/3632-8-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-13-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-10-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-11-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-9-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-25-0x00007FFCBCB60000-0x00007FFCBCB70000-memory.dmp

Filesize
64KB

Download
memory/3632-7-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-15-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-6-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-35-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-26-0x00007FFCBCB50000-0x00007FFCBCB60000-memory.dmp

Filesize
64KB

Download
memory/3632-24-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-5-0x00007FFCBBE1A000-0x00007FFCBBE1B000-memory.dmp

Filesize
4KB

Download
memory/3632-3-0x00000000027C0000-0x00000000027C1000-memory.dmp

Filesize
4KB

Download
memory/3632-12-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-16-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3632-23-0x00000000006E0000-0x00000000006E7000-memory.dmp

Filesize
28KB

Download
memory/3632-14-0x0000000140000000-0x00000001400A7000-memory.dmp

Filesize
668KB

Download
memory/3860-66-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp

Filesize
672KB

Download
memory/3860-63-0x0000027FFD530000-0x0000027FFD537000-memory.dmp

Filesize
28KB

Download
memory/4660-50-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp

Filesize
672KB

Download
memory/4660-47-0x000002547B2F0000-0x000002547B2F7000-memory.dmp

Filesize
28KB

Download
memory/4660-45-0x00007FFC9DEB0000-0x00007FFC9DF58000-memory.dmp

Filesize
672KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads